基于MATLAB的直流电机调速系统的建模与仿真.docx

PAGE PAGE 21 基于MATLAB的直流电机调速系统的建模与仿真 摘要 直流传动具有良好的调速特性和转矩控制性能，在工业生产中应用较早并沿用至今。直流电动机运行，它必须有较高的机械和电气能量转换效率，具有良好的功能，很长一段时间控制，直流调速控制系统已被垄断，其中双回路直流直流调速控制系统是在系统中占主导地位的主流设备，它具有调速范围宽，稳定性好，速度稳定，精度高，无论在理论和实践更加成熟的体系，拖动领域发挥着极为重要的作用。本文首先介绍了本课题的研究背景、研究意义和研究现状，然后介绍了直流电动机的工作原理，包括直流调速系统的调速原理、直流调速系统的性能指标和双闭环控制。并进一步分析了控制系统的设计，包括双闭环直流调速系统的总体设计。设计了电路框图、主电路结构、主电路设计、晶闸管触发电路以及双闭环调速系统的组成和设计。最后，利用Matlab/Simulink对整个调速系统进行了仿真分析。最后，绘制了速度控制电路的电气原理图。 关键词：MATLAB；双闭环；调速系统  Abstract Dc drive has good characteristics of speed regulation and torque control, and has been used in industrial production for a long time. Dc motor run, it must have a high mechanical and electrical energy conversion efficiency, has the good function, a long period of time control, dc speed control system has been monopoly, the double circuit dc dc speed control system is the dominant mainstream equipment in the system, it has a wide range of speed, good stability, speed stability, high precision, no matter in theory and in practice more mature system, drag the field play an extremely important role. This paper first introduces the research background, research significance and research status, and then introduces the principle of dc motor, including the speed regulation principle of dc speed control system, dc speed regulating system of performance indicators, double closed-loop dc speed regulation system, further analyzes the design of the control system, including the double closed-loop dc speed regulating system the total design block diagram, the structure of main circuit, the design of main circuit, thyristor trigger circuit, double closed loop speed control system composition and design, the last of the speed control system using MATLAB/SIMULINK simulation analysis, finally draw speed regulation control electric circuit principle diagram. Key words: MATLAB;Double closed loop;Speed control system 目 录 TOC \o 1-3 \h \z \u 摘要 I Abstract II 第一章 绪论 1 1.1研究背景 1 1.2研究目的及意义 1 1.3研究现状 1 第二章 直流电机原理 4